Golang index.Index函數代碼示例

func TestDocumentStaticMapping(t *testing.T) {
	defer func() {
		err := os.RemoveAll("testidx")
		if err != nil {
			t.Fatal(err)
		}
	}()

	m := NewIndexMapping()
	m.DefaultMapping = NewDocumentStaticMapping()
	m.DefaultMapping.AddFieldMappingsAt("Text", NewTextFieldMapping())
	m.DefaultMapping.AddFieldMappingsAt("Date", NewDateTimeFieldMapping())
	m.DefaultMapping.AddFieldMappingsAt("Numeric", NewNumericFieldMapping())

	index, err := New("testidx", m)
	if err != nil {
		t.Fatal(err)
	}

	doc1 := struct {
		Text           string
		IgnoredText    string
		Numeric        float64
		IgnoredNumeric float64
		Date           time.Time
		IgnoredDate    time.Time
	}{
		Text:           "valid text",
		IgnoredText:    "ignored text",
		Numeric:        10,
		IgnoredNumeric: 20,
		Date:           time.Unix(1, 0),
		IgnoredDate:    time.Unix(2, 0),
	}

	err = index.Index("a", doc1)
	if err != nil {
		t.Fatal(err)
	}

	fields, err := index.Fields()
	if err != nil {
		t.Fatal(err)
	}
	sort.Strings(fields)
	expectedFields := []string{"Date", "Numeric", "Text", "_all"}
	if len(fields) != len(expectedFields) {
		t.Fatalf("invalid field count: %d", len(fields))
	}
	for i, expected := range expectedFields {
		if expected != fields[i] {
			t.Fatalf("unexpected field[%d]: %s", i, fields[i])
		}
	}

	err = index.Close()
	if err != nil {
		t.Fatal(err)
	}
}

func TestOpenReadonlyMultiple(t *testing.T) {
	defer func() {
		err := os.RemoveAll("testidx")
		if err != nil {
			t.Fatal(err)
		}
	}()

	// build an index and close it
	index, err := New("testidx", NewIndexMapping())
	if err != nil {
		t.Fatal(err)
	}

	doca := map[string]interface{}{
		"name": "marty",
		"desc": "gophercon india",
	}
	err = index.Index("a", doca)
	if err != nil {
		t.Fatal(err)
	}

	err = index.Close()
	if err != nil {
		t.Fatal(err)
	}

	// now open it read-only
	index, err = OpenUsing("testidx", map[string]interface{}{
		"read_only": true,
	})

	if err != nil {
		t.Fatal(err)
	}

	// now open it again
	index2, err := OpenUsing("testidx", map[string]interface{}{
		"read_only": true,
	})

	if err != nil {
		t.Fatal(err)
	}

	err = index.Close()
	if err != nil {
		t.Fatal(err)
	}
	err = index2.Close()
	if err != nil {
		t.Fatal(err)
	}
}

func TestStoredFieldPreserved(t *testing.T) {
	defer func() {
		err := os.RemoveAll("testidx")
		if err != nil {
			t.Fatal(err)
		}
	}()

	index, err := New("testidx", NewIndexMapping())
	if err != nil {
		t.Fatal(err)
	}
	defer func() {
		err := index.Close()
		if err != nil {
			t.Fatal(err)
		}
	}()

	doca := map[string]interface{}{
		"name": "Marty",
		"desc": "GopherCON India",
		"bool": true,
		"num":  float64(1),
	}
	err = index.Index("a", doca)
	if err != nil {
		t.Error(err)
	}

	q := NewTermQuery("marty")
	req := NewSearchRequest(q)
	req.Fields = []string{"name", "desc", "bool", "num"}
	res, err := index.Search(req)
	if err != nil {
		t.Error(err)
	}

	if len(res.Hits) != 1 {
		t.Fatalf("expected 1 hit, got %d", len(res.Hits))
	}
	if res.Hits[0].Fields["name"] != "Marty" {
		t.Errorf("expected 'Marty' got '%s'", res.Hits[0].Fields["name"])
	}
	if res.Hits[0].Fields["desc"] != "GopherCON India" {
		t.Errorf("expected 'GopherCON India' got '%s'", res.Hits[0].Fields["desc"])
	}
	if res.Hits[0].Fields["num"] != float64(1) {
		t.Errorf("expected '1' got '%v'", res.Hits[0].Fields["num"])
	}
	if res.Hits[0].Fields["bool"] != true {
		t.Errorf("expected 'true' got '%v'", res.Hits[0].Fields["bool"])
	}
}

func TestSortMatchSearch(t *testing.T) {
	defer func() {
		err := os.RemoveAll("testidx")
		if err != nil {
			t.Fatal(err)
		}
	}()

	index, err := New("testidx", NewIndexMapping())
	if err != nil {
		t.Fatal(err)
	}

	names := []string{"Noam", "Uri", "David", "Yosef", "Eitan", "Itay", "Ariel", "Daniel", "Omer", "Yogev", "Yehonatan", "Moshe", "Mohammed", "Yusuf", "Omar"}
	days := []string{"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"}
	numbers := []string{"One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine", "Ten", "Eleven", "Twelve"}
	for i := 0; i < 200; i++ {
		doc := make(map[string]interface{})
		doc["Name"] = names[i%len(names)]
		doc["Day"] = days[i%len(days)]
		doc["Number"] = numbers[i%len(numbers)]
		err = index.Index(fmt.Sprintf("%d", i), doc)
		if err != nil {
			t.Fatal(err)
		}
	}

	req := NewSearchRequest(NewMatchQuery("One"))
	req.SortBy([]string{"Day", "Name"})
	req.Fields = []string{"*"}
	sr, err := index.Search(req)
	if err != nil {
		t.Fatal(err)
	}
	prev := ""
	for _, hit := range sr.Hits {
		val := hit.Fields["Day"].(string)
		if prev > val {
			t.Errorf("Hits must be sorted by 'Day'. Found '%s' before '%s'", prev, val)
		}
		prev = val
	}
	err = index.Close()
	if err != nil {
		t.Fatal(err)
	}
}

func TestClosedIndex(t *testing.T) {
	index, err := New("", NewIndexMapping())
	if err != nil {
		t.Fatal(err)
	}
	err = index.Close()
	if err != nil {
		t.Fatal(err)
	}

	err = index.Index("test", "test")
	if err != ErrorIndexClosed {
		t.Errorf("expected error index closed, got %v", err)
	}

	err = index.Delete("test")
	if err != ErrorIndexClosed {
		t.Errorf("expected error index closed, got %v", err)
	}

	b := index.NewBatch()
	err = index.Batch(b)
	if err != ErrorIndexClosed {
		t.Errorf("expected error index closed, got %v", err)
	}

	_, err = index.Document("test")
	if err != ErrorIndexClosed {
		t.Errorf("expected error index closed, got %v", err)
	}

	_, err = index.DocCount()
	if err != ErrorIndexClosed {
		t.Errorf("expected error index closed, got %v", err)
	}

	_, err = index.Search(NewSearchRequest(NewTermQuery("test")))
	if err != ErrorIndexClosed {
		t.Errorf("expected error index closed, got %v", err)
	}

	_, err = index.Fields()
	if err != ErrorIndexClosed {
		t.Errorf("expected error index closed, got %v", err)
	}
}

func TestIndexEmptyDocId(t *testing.T) {
	defer func() {
		err := os.RemoveAll("testidx")
		if err != nil {
			t.Fatal(err)
		}
	}()

	index, err := New("testidx", NewIndexMapping())
	if err != nil {
		t.Fatal(err)
	}
	defer func() {
		err := index.Close()
		if err != nil {
			t.Fatal(err)
		}
	}()

	doc := map[string]interface{}{
		"body": "nodocid",
	}

	err = index.Index("", doc)
	if err != ErrorEmptyID {
		t.Errorf("expect index empty doc id to fail")
	}

	err = index.Delete("")
	if err != ErrorEmptyID {
		t.Errorf("expect delete empty doc id to fail")
	}

	batch := index.NewBatch()
	err = batch.Index("", doc)
	if err != ErrorEmptyID {
		t.Errorf("expect index empty doc id in batch to fail")
	}

	batch.Delete("")
	if batch.Size() > 0 {
		t.Errorf("expect delete empty doc id in batch to be ignored")
	}
}

func TestKeywordSearchBug207(t *testing.T) {
	defer func() {
		err := os.RemoveAll("testidx")
		if err != nil {
			t.Fatal(err)
		}
	}()

	f := NewTextFieldMapping()
	f.Analyzer = keyword_analyzer.Name

	m := NewIndexMapping()
	m.DefaultMapping = NewDocumentMapping()
	m.DefaultMapping.AddFieldMappingsAt("Body", f)

	index, err := New("testidx", m)
	if err != nil {
		t.Fatal(err)
	}

	doc1 := struct {
		Body string
	}{
		Body: "a555c3bb06f7a127cda000005",
	}

	err = index.Index("a", doc1)
	if err != nil {
		t.Fatal(err)
	}

	doc2 := struct {
		Body string
	}{
		Body: "555c3bb06f7a127cda000005",
	}

	err = index.Index("b", doc2)
	if err != nil {
		t.Fatal(err)
	}

	// now search for these terms
	sreq := NewSearchRequest(NewTermQuery("a555c3bb06f7a127cda000005"))
	sres, err := index.Search(sreq)
	if err != nil {
		t.Fatal(err)
	}
	if sres.Total != 1 {
		t.Errorf("expected 1 result, got %d", sres.Total)
	}
	if sres.Hits[0].ID != "a" {
		t.Errorf("expecated id 'a', got '%s'", sres.Hits[0].ID)
	}

	sreq = NewSearchRequest(NewTermQuery("555c3bb06f7a127cda000005"))
	sres, err = index.Search(sreq)
	if err != nil {
		t.Fatal(err)
	}
	if sres.Total != 1 {
		t.Errorf("expected 1 result, got %d", sres.Total)
	}
	if sres.Hits[0].ID != "b" {
		t.Errorf("expecated id 'b', got '%s'", sres.Hits[0].ID)
	}

	// now do the same searches using query strings
	sreq = NewSearchRequest(NewQueryStringQuery("Body:a555c3bb06f7a127cda000005"))
	sres, err = index.Search(sreq)
	if err != nil {
		t.Fatal(err)
	}
	if sres.Total != 1 {
		t.Errorf("expected 1 result, got %d", sres.Total)
	}
	if sres.Hits[0].ID != "a" {
		t.Errorf("expecated id 'a', got '%s'", sres.Hits[0].ID)
	}

	sreq = NewSearchRequest(NewQueryStringQuery(`Body:555c3bb06f7a127cda000005`))
	sres, err = index.Search(sreq)
	if err != nil {
		t.Fatal(err)
	}
	if sres.Total != 1 {
		t.Errorf("expected 1 result, got %d", sres.Total)
	}
	if sres.Hits[0].ID != "b" {
		t.Errorf("expecated id 'b', got '%s'", sres.Hits[0].ID)
	}

	err = index.Close()
	if err != nil {
		t.Fatal(err)
	}
}

func TestDocumentFieldArrayPositions(t *testing.T) {
	defer func() {
		err := os.RemoveAll("testidx")
		if err != nil {
			t.Fatal(err)
		}
	}()

	index, err := New("testidx", NewIndexMapping())
	if err != nil {
		t.Fatal(err)
	}

	// index a document with an array of strings
	err = index.Index("k", struct {
		Messages []string
	}{
		Messages: []string{
			"first",
			"second",
			"third",
			"last",
		},
	})
	if err != nil {
		t.Fatal(err)
	}

	// load the document
	doc, err := index.Document("k")
	if err != nil {
		t.Fatal(err)
	}

	for _, f := range doc.Fields {
		if reflect.DeepEqual(f.Value(), []byte("first")) {
			ap := f.ArrayPositions()
			if len(ap) < 1 {
				t.Errorf("expected an array position, got none")
				continue
			}
			if ap[0] != 0 {
				t.Errorf("expected 'first' in array position 0, got %d", ap[0])
			}
		}
		if reflect.DeepEqual(f.Value(), []byte("second")) {
			ap := f.ArrayPositions()
			if len(ap) < 1 {
				t.Errorf("expected an array position, got none")
				continue
			}
			if ap[0] != 1 {
				t.Errorf("expected 'second' in array position 1, got %d", ap[0])
			}
		}
		if reflect.DeepEqual(f.Value(), []byte("third")) {
			ap := f.ArrayPositions()
			if len(ap) < 1 {
				t.Errorf("expected an array position, got none")
				continue
			}
			if ap[0] != 2 {
				t.Errorf("expected 'third' in array position 2, got %d", ap[0])
			}
		}
		if reflect.DeepEqual(f.Value(), []byte("last")) {
			ap := f.ArrayPositions()
			if len(ap) < 1 {
				t.Errorf("expected an array position, got none")
				continue
			}
			if ap[0] != 3 {
				t.Errorf("expected 'last' in array position 3, got %d", ap[0])
			}
		}
	}

	// now index a document in the same field with a single string
	err = index.Index("k2", struct {
		Messages string
	}{
		Messages: "only",
	})
	if err != nil {
		t.Fatal(err)
	}

	// load the document
	doc, err = index.Document("k2")
	if err != nil {
		t.Fatal(err)
	}

	for _, f := range doc.Fields {
		if reflect.DeepEqual(f.Value(), []byte("only")) {
			ap := f.ArrayPositions()
			if len(ap) != 0 {
				t.Errorf("expected no array positions, got %d", len(ap))
				continue
			}
//.........這裏部分代碼省略.........

func TestDict(t *testing.T) {
	defer func() {
		err := os.RemoveAll("testidx")
		if err != nil {
			t.Fatal(err)
		}
	}()

	index, err := New("testidx", NewIndexMapping())
	if err != nil {
		t.Fatal(err)
	}

	doca := map[string]interface{}{
		"name": "marty",
		"desc": "gophercon india",
	}
	err = index.Index("a", doca)
	if err != nil {
		t.Error(err)
	}

	docy := map[string]interface{}{
		"name": "jasper",
		"desc": "clojure",
	}
	err = index.Index("y", docy)
	if err != nil {
		t.Error(err)
	}

	docx := map[string]interface{}{
		"name": "rose",
		"desc": "googler",
	}
	err = index.Index("x", docx)
	if err != nil {
		t.Error(err)
	}

	dict, err := index.FieldDict("name")
	if err != nil {
		t.Error(err)
	}

	terms := []string{}
	de, err := dict.Next()
	for err == nil && de != nil {
		terms = append(terms, string(de.Term))
		de, err = dict.Next()
	}

	expectedTerms := []string{"jasper", "marty", "rose"}
	if !reflect.DeepEqual(terms, expectedTerms) {
		t.Errorf("expected %v, got %v", expectedTerms, terms)
	}

	err = dict.Close()
	if err != nil {
		t.Fatal(err)
	}

	// test start and end range
	dict, err = index.FieldDictRange("name", []byte("marty"), []byte("rose"))
	if err != nil {
		t.Error(err)
	}

	terms = []string{}
	de, err = dict.Next()
	for err == nil && de != nil {
		terms = append(terms, string(de.Term))
		de, err = dict.Next()
	}

	expectedTerms = []string{"marty", "rose"}
	if !reflect.DeepEqual(terms, expectedTerms) {
		t.Errorf("expected %v, got %v", expectedTerms, terms)
	}

	err = dict.Close()
	if err != nil {
		t.Fatal(err)
	}

	docz := map[string]interface{}{
		"name": "prefix",
		"desc": "bob cat cats catting dog doggy zoo",
	}
	err = index.Index("z", docz)
	if err != nil {
		t.Error(err)
	}

	dict, err = index.FieldDictPrefix("desc", []byte("cat"))
	if err != nil {
		t.Error(err)
	}

	terms = []string{}
//.........這裏部分代碼省略.........

func TestCrud(t *testing.T) {
	defer func() {
		err := os.RemoveAll("testidx")
		if err != nil {
			t.Fatal(err)
		}
	}()

	index, err := New("testidx", NewIndexMapping())
	if err != nil {
		t.Fatal(err)
	}

	doca := map[string]interface{}{
		"name": "marty",
		"desc": "gophercon india",
	}
	err = index.Index("a", doca)
	if err != nil {
		t.Error(err)
	}

	docy := map[string]interface{}{
		"name": "jasper",
		"desc": "clojure",
	}
	err = index.Index("y", docy)
	if err != nil {
		t.Error(err)
	}

	err = index.Delete("y")
	if err != nil {
		t.Error(err)
	}

	docx := map[string]interface{}{
		"name": "rose",
		"desc": "googler",
	}
	err = index.Index("x", docx)
	if err != nil {
		t.Error(err)
	}

	err = index.SetInternal([]byte("status"), []byte("pending"))
	if err != nil {
		t.Error(err)
	}

	docb := map[string]interface{}{
		"name": "steve",
		"desc": "cbft master",
	}
	batch := index.NewBatch()
	err = batch.Index("b", docb)
	if err != nil {
		t.Error(err)
	}
	batch.Delete("x")
	batch.SetInternal([]byte("batchi"), []byte("batchv"))
	batch.DeleteInternal([]byte("status"))
	err = index.Batch(batch)
	if err != nil {
		t.Error(err)
	}
	val, err := index.GetInternal([]byte("batchi"))
	if err != nil {
		t.Error(err)
	}
	if string(val) != "batchv" {
		t.Errorf("expected 'batchv', got '%s'", val)
	}
	val, err = index.GetInternal([]byte("status"))
	if err != nil {
		t.Error(err)
	}
	if val != nil {
		t.Errorf("expected nil, got '%s'", val)
	}

	err = index.SetInternal([]byte("seqno"), []byte("7"))
	if err != nil {
		t.Error(err)
	}
	err = index.SetInternal([]byte("status"), []byte("ready"))
	if err != nil {
		t.Error(err)
	}
	err = index.DeleteInternal([]byte("status"))
	if err != nil {
		t.Error(err)
	}
	val, err = index.GetInternal([]byte("status"))
	if err != nil {
		t.Error(err)
	}
	if val != nil {
		t.Errorf("expected nil, got '%s'", val)
	}
//.........這裏部分代碼省略.........

func TestBooleanFieldMappingIssue109(t *testing.T) {
	defer func() {
		err := os.RemoveAll("testidx")
		if err != nil {
			t.Fatal(err)
		}
	}()

	m := NewIndexMapping()
	m.DefaultMapping = NewDocumentMapping()
	m.DefaultMapping.AddFieldMappingsAt("Bool", NewBooleanFieldMapping())

	index, err := New("testidx", m)
	if err != nil {
		t.Fatal(err)
	}

	type doc struct {
		Bool bool
	}
	err = index.Index("true", &doc{Bool: true})
	if err != nil {
		t.Fatal(err)
	}
	err = index.Index("false", &doc{Bool: false})
	if err != nil {
		t.Fatal(err)
	}

	sreq := NewSearchRequest(NewBoolFieldQuery(true).SetField("Bool"))
	sres, err := index.Search(sreq)
	if err != nil {
		t.Fatal(err)
	}
	if sres.Total != 1 {
		t.Errorf("expected 1 results, got %d", sres.Total)
	}

	sreq = NewSearchRequest(NewBoolFieldQuery(false).SetField("Bool"))
	sres, err = index.Search(sreq)
	if err != nil {
		t.Fatal(err)
	}
	if sres.Total != 1 {
		t.Errorf("expected 1 results, got %d", sres.Total)
	}

	sreq = NewSearchRequest(NewBoolFieldQuery(true))
	sres, err = index.Search(sreq)
	if err != nil {
		t.Fatal(err)
	}
	if sres.Total != 1 {
		t.Errorf("expected 1 results, got %d", sres.Total)
	}

	err = index.Close()
	if err != nil {
		t.Fatal(err)
	}
}

func TestDocumentFieldArrayPositionsBug295(t *testing.T) {
	defer func() {
		err := os.RemoveAll("testidx")
		if err != nil {
			t.Fatal(err)
		}
	}()

	index, err := New("testidx", NewIndexMapping())
	if err != nil {
		t.Fatal(err)
	}

	// index a document with an array of strings
	err = index.Index("k", struct {
		Messages []string
		Another  string
		MoreData []string
	}{
		Messages: []string{
			"bleve",
			"bleve",
		},
		Another: "text",
		MoreData: []string{
			"a",
			"b",
			"c",
			"bleve",
		},
	})
	if err != nil {
		t.Fatal(err)
	}

	// search for it in the messages field
	tq := NewTermQuery("bleve").SetField("Messages")
	tsr := NewSearchRequest(tq)
	results, err := index.Search(tsr)
	if err != nil {
		t.Fatal(err)
	}
	if results.Total != 1 {
		t.Fatalf("expected 1 result, got %d", results.Total)
	}
	if len(results.Hits[0].Locations["Messages"]["bleve"]) != 2 {
		t.Fatalf("expected 2 locations of 'bleve', got %d", len(results.Hits[0].Locations["Messages"]["bleve"]))
	}
	if results.Hits[0].Locations["Messages"]["bleve"][0].ArrayPositions[0] != 0 {
		t.Errorf("expected array position to be 0")
	}
	if results.Hits[0].Locations["Messages"]["bleve"][1].ArrayPositions[0] != 1 {
		t.Errorf("expected array position to be 1")
	}

	// search for it in all
	tq = NewTermQuery("bleve")
	tsr = NewSearchRequest(tq)
	results, err = index.Search(tsr)
	if err != nil {
		t.Fatal(err)
	}
	if results.Total != 1 {
		t.Fatalf("expected 1 result, got %d", results.Total)
	}
	if len(results.Hits[0].Locations["Messages"]["bleve"]) != 2 {
		t.Fatalf("expected 2 locations of 'bleve', got %d", len(results.Hits[0].Locations["Messages"]["bleve"]))
	}
	if results.Hits[0].Locations["Messages"]["bleve"][0].ArrayPositions[0] != 0 {
		t.Errorf("expected array position to be 0")
	}
	if results.Hits[0].Locations["Messages"]["bleve"][1].ArrayPositions[0] != 1 {
		t.Errorf("expected array position to be 1")
	}

	err = index.Close()
	if err != nil {
		t.Fatal(err)
	}
}

func TestDateTimeFieldMappingIssue287(t *testing.T) {
	defer func() {
		err := os.RemoveAll("testidx")
		if err != nil {
			t.Fatal(err)
		}
	}()

	f := NewDateTimeFieldMapping()

	m := NewIndexMapping()
	m.DefaultMapping = NewDocumentMapping()
	m.DefaultMapping.AddFieldMappingsAt("Date", f)

	index, err := New("testidx", m)
	if err != nil {
		t.Fatal(err)
	}

	type doc struct {
		Date time.Time
	}

	now := time.Now()

	// 3hr ago to 1hr ago
	for i := 0; i < 3; i++ {
		d := doc{now.Add(time.Duration((i - 3)) * time.Hour)}

		err = index.Index(strconv.FormatInt(int64(i), 10), d)
		if err != nil {
			t.Fatal(err)
		}
	}

	// search range across all docs
	start := now.Add(-4 * time.Hour).Format(time.RFC3339)
	end := now.Format(time.RFC3339)
	sreq := NewSearchRequest(NewDateRangeQuery(&start, &end))
	sres, err := index.Search(sreq)
	if err != nil {
		t.Fatal(err)
	}
	if sres.Total != 3 {
		t.Errorf("expected 3 results, got %d", sres.Total)
	}

	// search range includes only oldest
	start = now.Add(-4 * time.Hour).Format(time.RFC3339)
	end = now.Add(-121 * time.Minute).Format(time.RFC3339)
	sreq = NewSearchRequest(NewDateRangeQuery(&start, &end))
	sres, err = index.Search(sreq)
	if err != nil {
		t.Fatal(err)
	}
	if sres.Total != 1 {
		t.Errorf("expected 1 results, got %d", sres.Total)
	}
	if sres.Total > 0 && sres.Hits[0].ID != "0" {
		t.Errorf("expecated id '0', got '%s'", sres.Hits[0].ID)
	}

	// search range includes only newest
	start = now.Add(-61 * time.Minute).Format(time.RFC3339)
	end = now.Format(time.RFC3339)
	sreq = NewSearchRequest(NewDateRangeQuery(&start, &end))
	sres, err = index.Search(sreq)
	if err != nil {
		t.Fatal(err)
	}
	if sres.Total != 1 {
		t.Errorf("expected 1 results, got %d", sres.Total)
	}
	if sres.Total > 0 && sres.Hits[0].ID != "2" {
		t.Errorf("expecated id '2', got '%s'", sres.Hits[0].ID)
	}

	err = index.Close()
	if err != nil {
		t.Fatal(err)
	}
}

func TestTermVectorArrayPositions(t *testing.T) {
	defer func() {
		err := os.RemoveAll("testidx")
		if err != nil {
			t.Fatal(err)
		}
	}()

	index, err := New("testidx", NewIndexMapping())
	if err != nil {
		t.Fatal(err)
	}

	// index a document with an array of strings
	err = index.Index("k", struct {
		Messages []string
	}{
		Messages: []string{
			"first",
			"second",
			"third",
			"last",
		},
	})
	if err != nil {
		t.Fatal(err)
	}

	// search for this document in all field
	tq := NewTermQuery("second")
	tsr := NewSearchRequest(tq)
	results, err := index.Search(tsr)
	if err != nil {
		t.Fatal(err)
	}
	if results.Total != 1 {
		t.Fatalf("expected 1 result, got %d", results.Total)
	}
	if len(results.Hits[0].Locations["Messages"]["second"]) < 1 {
		t.Fatalf("expected at least one location")
	}
	if len(results.Hits[0].Locations["Messages"]["second"][0].ArrayPositions) < 1 {
		t.Fatalf("expected at least one location array position")
	}
	if results.Hits[0].Locations["Messages"]["second"][0].ArrayPositions[0] != 1 {
		t.Fatalf("expected array position 1, got %f", results.Hits[0].Locations["Messages"]["second"][0].ArrayPositions[0])
	}

	// repeat search for this document in Messages field
	tq2 := NewTermQuery("third").SetField("Messages")
	tsr = NewSearchRequest(tq2)
	results, err = index.Search(tsr)
	if err != nil {
		t.Fatal(err)
	}
	if results.Total != 1 {
		t.Fatalf("expected 1 result, got %d", results.Total)
	}
	if len(results.Hits[0].Locations["Messages"]["third"]) < 1 {
		t.Fatalf("expected at least one location")
	}
	if len(results.Hits[0].Locations["Messages"]["third"][0].ArrayPositions) < 1 {
		t.Fatalf("expected at least one location array position")
	}
	if results.Hits[0].Locations["Messages"]["third"][0].ArrayPositions[0] != 2 {
		t.Fatalf("expected array position 2, got %f", results.Hits[0].Locations["Messages"]["third"][0].ArrayPositions[0])
	}

	err = index.Close()
	if err != nil {
		t.Fatal(err)
	}
}

// TestBug408 tests for VERY large values of size, even though actual result
// set may be reasonable size
func TestBug408(t *testing.T) {
	type TestStruct struct {
		ID     string  `json:"id"`
		UserID *string `json:"user_id"`
	}

	docMapping := NewDocumentMapping()
	docMapping.AddFieldMappingsAt("id", NewTextFieldMapping())
	docMapping.AddFieldMappingsAt("user_id", NewTextFieldMapping())

	indexMapping := NewIndexMapping()
	indexMapping.DefaultMapping = docMapping

	index, err := NewMemOnly(indexMapping)
	if err != nil {
		t.Fatal(err)
	}

	numToTest := 10
	matchUserID := "match"
	noMatchUserID := "no_match"
	matchingDocIds := make(map[string]struct{})

	for i := 0; i < numToTest; i++ {
		ds := &TestStruct{"id_" + strconv.Itoa(i), nil}
		if i%2 == 0 {
			ds.UserID = &noMatchUserID
		} else {
			ds.UserID = &matchUserID
			matchingDocIds[ds.ID] = struct{}{}
		}
		err = index.Index(ds.ID, ds)
		if err != nil {
			t.Fatal(err)
		}
	}

	cnt, err := index.DocCount()
	if err != nil {
		t.Fatal(err)
	}
	if int(cnt) != numToTest {
		t.Fatalf("expected %d documents in index, got %d", numToTest, cnt)
	}

	q := NewTermQuery(matchUserID)
	q.SetField("user_id")
	searchReq := NewSearchRequestOptions(q, math.MaxInt32, 0, false)
	results, err := index.Search(searchReq)
	if err != nil {
		t.Fatal(err)
	}
	if int(results.Total) != numToTest/2 {
		t.Fatalf("expected %d search hits, got %d", numToTest/2, results.Total)
	}

	for _, result := range results.Hits {
		if _, found := matchingDocIds[result.ID]; !found {
			t.Fatalf("document with ID %s not in results as expected", result.ID)
		}
	}
}